Controlling Motion Blur in Synthetic Long Time Exposures

dc.contributor.authorLancelle, Marcelen_US
dc.contributor.authorDogan, Pelinen_US
dc.contributor.authorGross, Markusen_US
dc.contributor.editorAlliez, Pierre and Pellacini, Fabioen_US
dc.date.accessioned2019-05-05T17:41:48Z
dc.date.available2019-05-05T17:41:48Z
dc.date.issued2019
dc.description.abstractIn a photo, motion blur can be used as an artistic style to convey motion and to direct attention. In panning or tracking shots, a moving object of interest is followed by the camera during a relatively long exposure. The goal is to get a blurred background while keeping the object sharp. Unfortunately, it can be difficult to impossible to precisely follow the object. Often, many attempts or specialized physical setups are needed. This paper presents a novel approach to create such images. For capturing, the user is only required to take a casually recorded hand-held video that roughly follows the object. Our algorithm then produces a single image which simulates a stabilized long time exposure. This is achieved by first warping all frames such that the object of interest is aligned to a reference frame. Then, optical flow based frame interpolation is used to reduce ghosting artifacts from temporal undersampling. Finally, the frames are averaged to create the result. As our method avoids segmentation and requires little to no user interaction, even challenging sequences can be processed successfully. In addition, artistic control is available in a number of ways. The effect can also be applied to create videos with an exaggerated motion blur. Results are compared with previous methods and ground truth simulations. The effectiveness of our method is demonstrated by applying it to hundreds of datasets. The most interesting results are shown in the paper and in the supplemental material.en_US
dc.description.number2
dc.description.sectionheadersLearning Images
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume38
dc.identifier.doi10.1111/cgf.13646
dc.identifier.issn1467-8659
dc.identifier.pages393-403
dc.identifier.urihttps://doi.org/10.1111/cgf.13646
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13646
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectComputing methodologies
dc.subjectComputational photography
dc.subjectImage processing
dc.titleControlling Motion Blur in Synthetic Long Time Exposuresen_US
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